CN210744861U

CN210744861U - Column type coreless motor

Info

Publication number: CN210744861U
Application number: CN201921811460.7U
Authority: CN
Inventors: 刘加平; 冯超; 蒋爱国; 王磊磊; 王倩; 朱凯凯; 孙汀; 庄会浩; 姜文富; 刘远见
Original assignee: Shandong Huasheng Pesticide Machinery Co Ltd
Current assignee: Shandong Huasheng Pesticide Machinery Co Ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-06-12
Anticipated expiration: 2029-10-26

Abstract

The utility model discloses a column type coreless motor. This novel motor includes stator, rotor, motor housing, and the rotor that designs is the column type structure of U type annular, and the stator is placed in the U type annular magnetic field of rotor, and the stator will adopt stranded doubling, profile of tooth circumference to wind in succession, the superimposed coil solidification of three-phase forms inside for using thermosetting material through pressure equipment, and no iron loss, the heat loss is little, and is efficient. And the rotor is provided with a cooling fan, and the fan discharges the heat generated by the coil out of the motor through a cooling air duct of the motor shell, so that the cooling effect of the motor is effectively ensured.

Description

Column type coreless motor

Technical Field

The utility model relates to a column type coreless motor, this kind of motor are coreless's external rotor electric machine, and not only simple structure, efficient, the coil generates heat extremely low moreover, and no iron loss, the heat loss is little. The problems of small power, heavy weight, short endurance time and poor reliability of motors with the same volume are solved at a stroke. Is particularly suitable for being used as a power matching in the aspects of modern garden machinery and small electric tools. The utility model discloses a column type coreless motor to its small in noise, power are strong, the fuselage is light and handy, steady quality, sturdy and durable's advantage, will promote the innovation development of the supporting power in this field.

Background

Traditional brush motor and brushless motor all adopt silicon steel sheet and coil winding to constitute, have the great shortcoming of weight and bodily form, and the existence of silicon steel sheet especially can produce great iron loss and copper loss, and the vortex that produces after the circular telegram also can produce energy loss, and these shortcomings have restricted the promotion of motor efficiency and duration greatly. The existing similar motor is not provided with a corresponding heat dissipation system, so that the heat of the motor cannot be discharged in time, the reliability and the motor efficiency of the motor are affected, the assembly process and the assembly requirement are higher, and in addition, the dynamic balance of a rotor needs to be specially made. Due to the limitation of conditions, the overall performance is difficult to have a large breakthrough. Therefore, the motor which is high in efficiency, convenient to install, simple, reliable and modular in assembly mode needs to be released urgently to meet the requirements of people at present so as to reduce labor load and improve production efficiency.

With the continuous development of lithium batteries, electric tools gradually enter the lives of people, and various electric tools with different purposes become necessary tools for every family in developed countries and regions in Europe and America. The motor is taken as the core of the electric product, and the development position of the motor is self-evident, so that the efficient and energy-saving motor technology becomes the key for improving the electric product.

Disclosure of Invention

An object of the utility model is to provide a high-efficient, energy-conserving column type does not have iron core motor.

The technical scheme of the utility model as follows: a column type coreless motor comprises a main body, a motor shell, a rotor and a stator. The rotor is manufactured into a column type structure with a U-shaped ring groove, the rotor material is processed by using a high-strength iron material, and the rotational inertia of the motor is effectively guaranteed. The side surface of the inside of the U-shaped ring groove is uniformly provided with a plurality of pairs of permanent magnets, in order to prevent the permanent magnets from falling off due to the centrifugal force of high-speed rotation, a clamp structure of an upper end cover and a lower end fan is arranged, and the pairs of permanent magnets are fastened on the core shaft through interference fit; the inner side surface of the U-shaped structure is positioned through the annular boss of the lower end cooling fan, and the installation consistency of the permanent magnets is guaranteed.

The heat dissipation air channel is ingeniously arranged in the shell structure, heat generated by the motor coil is effectively discharged from the heat dissipation air channel under the action of the fan, and the shell structure is made of aluminum alloy materials, so that the weight of the motor is reduced, and the heat dissipation effect of the motor is guaranteed.

The stator is made up by using thermosetting material and making the coil adopting multi-strand doubling, three-phase superposition and tooth-form circumferential continuous winding method be solidified in the interior of said stator by means of pressure equipment. The whole stator is positioned by the circular flange surface at the upper part, so that the coil parts are uniformly distributed in the annular magnetic field of the U-shaped structure rotor.

The utility model discloses have following advantage with current motor technology: the rotor is a column structure with a U-shaped annular groove formed by the mandrel, the cooling fan and the rotor shell, and is convenient for accurate positioning and stator installation. The outer rotor motor has large rotational inertia. The coils in the stator adopt a multi-strand doubling, three-phase superposition and tooth-shaped circumferential continuous winding method, so that the winding is more convenient and reliable. The stator is formed by solidifying the coil inside by the thermosetting material through pressure equipment, no additional medium, no iron loss, less heat loss and reliable performance are realized. The inner side of the motor shell is provided with the blade type heat dissipation air duct, so that the heat dissipation effect can be effectively guaranteed, and the efficiency of the motor can be furthest exerted. The installation and the positioning are accurate and reliable, and dynamic balance is not needed.

Drawings

FIG. 1 is a schematic view of the structure of the pillar type coreless motor of the present invention

FIG. 2 is the installation schematic diagram of the column type coreless motor of the present invention

FIG. 3 is a schematic view of the structure of the rotor of the post type coreless motor of the present invention

FIG. 4 is the core shaft assembly structure of the column type coreless motor of the present invention

FIG. 5 is a schematic view of the stator structure of the post type coreless motor of the present invention

FIG. 6 is an axonometric view of the outer shell of the column type coreless motor of the present invention

The numbering in the drawings illustrates: 1. a motor housing; 2. a bearing; 3. a rotor; 4. a stator; 5. a gland is arranged; 6. a screw; 7. a heat radiation fan; 8. an inner permanent magnet; 9. a card sleeve; 10. a mandrel; 11. a rotor housing; 12. an outer permanent magnet; 13. a coil; 14. a thermosetting material.

Detailed Description

As shown in fig. 1 and 2, the overall structure of the motor is that bearings 2 are respectively pressed on two ends of a mandrel 10 of a rotor 3, the rotor 3 with the bearings pressed on two ends is installed on a motor shell 1 according to the direction shown in fig. 2, then a stator 4 is placed in a U-shaped ring groove of the rotor 3, an upper gland 5 is placed above the stator 4 according to the direction shown in fig. 2, and finally the upper gland 5 and the stator 4 are fixed on the motor shell 1 by screws 6.

As shown in fig. 3, the rotor 3 is formed by attaching permanent magnets to both sides of a U-shaped cavity formed by a core shaft 10, a heat dissipation fan 7 and a rotor housing 11. The inner layer structure of the rotor is as shown in fig. 4, the inner permanent magnet 8 is attached to the mandrel 10 in a manner that N, S poles are alternately arranged, the cooling fan 7 and the cutting ferrule 9 are pressed at two ends of the mandrel 10, the annular cutting ferrule of the cooling fan 7 and the cutting ferrule 9 is clamped in the groove of the inner permanent magnet 8, and the inner permanent magnet 8 is locked on the mandrel 10 together. The outer permanent magnets 12 are uniformly adhered to the inner surface of the rotor case 11 with an adhesive so that N, S poles are alternately arranged to form the outer portion of the rotor, and the outer portion of the rotor is press-fitted to the heat dissipation fan 7 to form the integrated rotor 3.

As shown in fig. 5, the stator 4 is made by injecting, heating and pressurizing special thermosetting material 14 at the periphery, and forming, the inner coil 13 is made by winding enameled wires coated with special material by a special forming tool, and the enameled wires are wound on the forming tool by adopting a multi-strand doubling, three-phase overlapping and tooth-shaped circumference continuous winding method.

A column type does not have for iron core motor rely on as shown in figure 6 motor housing 1 on the unthreaded hole on the outer terminal surface bolt fastening on required equipment, accomplish supporting use on equipment with the power transmission of motor.

A column type coreless motor, lean on lithium cell or constant voltage DC power supply, through controller regulating current, the electric current is through the cyclic annular closed coil 13 that has fixed magnetic flux, drive rotor 3 is rotatory, by middle dabber 10 with power output to the equipment that uses. Finally, the conversion from electricity to kinetic energy is completed.

Claims

1. The utility model provides a column type does not have iron core motor, the main part includes motor housing (1), rotor (3), stator (4), and its structure is: rotor (3) are supported through bearing (2) of motor housing (1) and last gland (5), and stator (4) are placed in the U type annular magnetic field of rotor (3), fix with screw (6) through last gland (5) and motor housing (1) location back, its characterized in that: the rotor (3) is of a cylindrical structure with a U-shaped annular groove surrounded by a mandrel (10), a cooling fan (7) and a rotor shell (11); the end face of the rotor (3) is provided with a heat radiation fan (7) which is embedded on the rotor shell (11); the inner side of the motor shell (1) is provided with a blade type heat dissipation air duct.

2. The pole type coreless motor according to claim 1, wherein the heat dissipation fan (7) and the heat dissipation air duct on the motor housing (1) form a heat dissipation system, and the principle is as follows: the heat generated by the coil (13) is blown to the heat dissipation guide vanes of the motor shell (1) by the heat dissipation fan (7) and flows out from the other end through the air channel formed by the vanes to play a role of directional heat dissipation, and the directional heat dissipation airflow can further effectively dissipate heat of the controller.

3. The column type coreless motor according to claim 1, wherein the rotor (3) comprises six parts, namely a mandrel (10), a cooling fan (7), a clamping sleeve (9), an inner permanent magnet (8) and an outer permanent magnet (12), the inner permanent magnet (8) is tightly attached to the outer edge of the mandrel (10), and the outer permanent magnet (12) is fixed on the inner side surface of a rotor shell (11).

4. The pole type coreless motor according to claim 1, wherein the stator (4) is formed by internally solidifying a coil (13) formed by a multi-strand, three-phase-stacked, tooth-shaped circumferential continuous winding method by a press apparatus using a thermosetting material (14).